Sorry typo in 6 above. It should say the grandson as in 2 above rather than the grandson of 2 above.
I'm thinking that my next move might have to be to take both those Zephaniah's baptised in 1803 in Sheffield Cathedral back further through their respective parents Joseph/Mary and Thomas/Ruth to see if there is a patriarchical Zephaniah somewhere in the distance to whom they are both related. Not sure if all the records are around to enable this though.
Pheno